From: Luca Tosolini (l.tosolini@chello.nl)
Date: Sat Dec 06 2008 - 19:30:45 ARST
Hi Experts,
I captured the adjacency establishment on a p2m-broadcast network and
the following appears:
1- first hellos multicast
2- then the neighbor is discovered and hello switches to unicast
3- dd, lsr, lsu and lsa all unicast to neighbor address
4- once the db are synchronized, the hellos move back to multicast
While steps 1, 2, 3 make perfect sense to me, step 4 is total
nosense :-(
Any idea while it switches back to multicast? see capture below
Thanks,
bit.
No. Time Source Destination Protocol
Info
1 0.000000 192.168.0.1 224.0.0.5 OSPF
Hello Packet
No. Time Source Destination Protocol
Info
2 30.036926 192.168.0.1 224.0.0.5 OSPF
Hello Packet
No. Time Source Destination Protocol
Info
3 47.602189 Inverse
ARP Who is 0401? Tell 0000
No. Time Source Destination Protocol
Info
5 60.184209 192.168.0.1 224.0.0.5 OSPF
Hello Packet
No. Time Source Destination Protocol
Info
6 60.194623 192.168.0.2 192.168.0.1 OSPF
Hello Packet
No. Time Source Destination Protocol
Info
7 60.217233 192.168.0.1 192.168.0.2 OSPF
DB Descr.
No. Time Source Destination Protocol
Info
8 60.217619 192.168.0.1 192.168.0.2 OSPF
Hello Packet
No. Time Source Destination Protocol
Info
9 60.231960 192.168.0.2 192.168.0.1 OSPF
DB Descr.
No. Time Source Destination Protocol
Info
10 60.232854 192.168.0.2 192.168.0.1 OSPF
DB Descr.
No. Time Source Destination Protocol
Info
11 60.254059 192.168.0.1 192.168.0.2 OSPF
DB Descr.
No. Time Source Destination Protocol
Info
12 60.266698 192.168.0.2 192.168.0.1 OSPF
DB Descr.
No. Time Source Destination Protocol
Info
13 60.287051 192.168.0.1 192.168.0.2 OSPF
DB Descr.
No. Time Source Destination Protocol
Info
14 60.287485 192.168.0.1 192.168.0.2 OSPF
LS Request
No. Time Source Destination Protocol
Info
15 60.302372 192.168.0.2 192.168.0.1 OSPF
LS Request
No. Time Source Destination Protocol
Info
16 60.302500 192.168.0.2 192.168.0.1 OSPF
DB Descr.
No. Time Source Destination Protocol
Info
17 60.302695 192.168.0.2 192.168.0.1 OSPF
LS Update
No. Time Source Destination Protocol
Info
18 60.323451 192.168.0.1 192.168.0.2 OSPF
LS Update
No. Time Source Destination Protocol
Info
19 60.823180 192.168.0.1 192.168.0.2 OSPF
LS Update
No. Time Source Destination Protocol
Info
20 60.839132 192.168.0.2 192.168.0.1 OSPF
LS Update
No. Time Source Destination Protocol
Info
21 62.828848 192.168.0.1 192.168.0.2 OSPF
LS Acknowledge
No. Time Source Destination Protocol
Info
22 62.852114 192.168.0.2 192.168.0.1 OSPF
LS Acknowledge
No. Time Source Destination Protocol
Info
23 75.659995 192.168.0.2 224.0.0.5 OSPF
Hello Packet
No. Time Source Destination Protocol
Info
24 90.328088 192.168.0.1 224.0.0.5 OSPF
Hello Packet
No. Time Source Destination Protocol
Info
25 105.837465 192.168.0.2 224.0.0.5 OSPF
Hello Packet
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